Our expert says:
It is very difficult for me to diagnose the problem in question without doing a clinical examination and hair/skin/blood diagnostics. Animals usually present with additional clinical sign's depending on the problem at hand.
I suspect that the condition is somewhat serious from your description.
A couple of suggestions that may cause this problem include:
a) Acral Lick Dermatitis
b) Endocrine: Cushing's Disease, Addisons Disease, Diabetes Mellitus, Hypothyroid
c) Bacterial, Ringworm, Malassezia
d) Parasitic - Fleas, Mange e.t.c
I hope this is of help.
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